November 2006
Beginner
672 pages
15h 30m
English
Content preview from MPLS Fundamentals
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Chapter 3. Forwarding Labeled Packets
What You Will Learn
After completing this chapter, you will be able to do the following:
Explain how labeled packets are forwarded
Name the reserved MPLS labels and know what they are used for
Determine the importance of MPLS MTU in MPLS networks
Explain what happens to labeled packets that have TTL expiring
Explain what happens with labeled packets that need to be fragmented
Chapter 2, “MPLS Architecture,” focused on what an MPLS label is and how it is used. This chapter specifically focuses on how labeled packets are forwarded. Forwarding labeled packets is quite different from forwarding IP packets. Not only is the IP lookup replaced with a lookup of the label in the label forwarding information base (LFIB), ...
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